JMeter example source code file (GraphAccumVisualizer.java)

This example JMeter source code file (GraphAccumVisualizer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - JMeter tags/keywords

awt, border, end, end, graphaccum, graphaccummodel, graphaccumvisualizer, graphaccumvisualizer1, gui, image, jpanel, jpanel, jscrollpane, jscrollpane, start, start, string, swing

The JMeter GraphAccumVisualizer.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.jmeter.visualizers;

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.Image;

import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;

import org.apache.jmeter.samplers.Clearable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jmeter.visualizers.gui.AbstractVisualizer;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.Logger;

/**
 * This class implements a statistical analyser that plots the accumulated time
 * taken to load each set of pages. The number of plots is equivalent to the
 * number of times the set of pages is configured to load.
 *
 *
 * Created 2001/08/11
 */
public class GraphAccumVisualizer extends AbstractVisualizer implements ImageVisualizer, GraphAccumListener, Clearable {
    private static final long serialVersionUID = 240L;

    private static final Logger log = LoggingManager.getLoggerForClass();

    protected transient GraphAccumModel model;

    protected transient GraphAccum graph;

    protected transient JPanel legendPanel;

    /**
     * Constructor.
     */
    public GraphAccumVisualizer() {
        super();
        model = new GraphAccumModel();
        model.addGraphAccumListener(this);
        init();
        log.debug("Start : GraphAccumVisualizer1");
        log.debug("End : GraphAccumVisualizer1");
    }

    public String getLabelResource() {
        return "graph_full_results_title"; // $NON-NLS-1$
    }

    public void add(SampleResult res) {
        model.addNewSample(res);
    }

    /**
     * Returns the panel where labels can be added.
     *
     * @return a panel where labels can be added
     */
    public Object getWhiteCanvas() {
        return legendPanel;
    }

    /**
     * Gets the Image attribute of the GraphVisualizer object.
     *
     * @return the Image value
     */
    public Image getImage() {
        log.debug("Start : getImage1");
        Image result = graph.createImage(graph.getWidth(), graph.getHeight());

        graph.paintComponent(result.getGraphics());
        log.debug("End : getImage1");
        return result;
    }

    /**
     * Updates the gui to reflect changes.
     */
    public void updateGui() {
        log.debug("Start : updateGui1");
        graph.updateGui();
        log.debug("End : updateGui1");
    }

    /**
     * Updates gui to reflect small changes.
     *
     * @param s
     *            sample to be added to plot
     */
    public void updateGui(SampleResult s) {
        log.debug("Start : updateGui2");
        log.debug("End : updateGui2");
    }

    /**
     * Clear this visualizer data.
     */
    public synchronized void clearData() {
        model.clearData();
        graph.clearData();
        log.debug("Start : clear1");
        repaint();
        log.debug("End : clear1");
    }

    /**
     * Returns a description of this instance.
     *
     * @return description of this instance
     */
    @Override
    public String toString() {
        String toString = "Show the samples analysys as dot plots";
        return toString;
    }

    /**
     * Setup all the swing components.
     */
    private void init() {
        log.debug("Start : init1");
        graph = new GraphAccum(model);
        graph.setVisualizer(this);

        this.setLayout(new BorderLayout());

        // MAIN PANEL
        JPanel mainPanel = new JPanel();
        Border margin = new EmptyBorder(10, 10, 5, 10);

        mainPanel.setBorder(margin);
        mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));

        // TITLE
        JLabel panelTitleLabel = new JLabel(JMeterUtils.getResString("graph_full_results_title")); // $NON-NLS-1$
        Font curFont = panelTitleLabel.getFont();
        int curFontSize = curFont.getSize();

        curFontSize += 4;
        panelTitleLabel.setFont(new Font(curFont.getFontName(), curFont.getStyle(), curFontSize));
        mainPanel.add(panelTitleLabel);

        mainPanel.add(getNamePanel());
        mainPanel.add(getFilePanel());

        JScrollPane graphScrollPanel = new JScrollPane(graph, JScrollPane.VERTICAL_SCROLLBAR_NEVER,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

        graphScrollPanel.setViewportBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
        legendPanel = new JPanel();

        JScrollPane legendScrollPanel = new JScrollPane(legendPanel);
        JSplitPane graphSplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, graphScrollPanel, legendScrollPanel);

        this.add(mainPanel, BorderLayout.NORTH);
        this.add(graphSplitPane, BorderLayout.CENTER);
        log.debug("End : init1");
    }
}